Take 22 freeway east to 55 freeway junction. Get off the 55 freeway at first opportunity (Chapman Avenue Eastbound). Continue on Chapman Avenue Eastbound approximately 5 miles to the two Toll Roads onramps. At the Toll Roads onramps Chapman Avenue changes in name to Santiago Canyon Road. Continue Eastbound on Santiago Canyon Road until you reach the entrance to Irvine Lake (on your left) approximately 2 miles. Continue on Santiago Canyon Road to the next left turn opportunity (3/4 mile).  Turn left through the gate (this is Blue Diamond Road) and continue on the paved road for 1 mile.

At the white entrance pipe gate is OCMA “Bob Swenson Memorial Field”.

 Take any Freeway (not toll road) north to El Toro Road.  Continue Eastbound on El Toro Road approximately 5 miles to Santiago Canyon Road (at the Cooks Corners Biker Bar) Continue as the Road veers left and you are Northbound on Santiago Canyon Road approximately 13 miles (past the Railroad Bridge) to Blue Diamond Road (no sign marker) but you will notice signs in Cub Yellow for BAHA BEACH PARK, LITTLE OAK PARK AND BIG OAK PARK.

(IF you arrive at the Irvine Lake Entrance, you past up the right turn)

 Turn right through the gate (Blue Diamond Road) and continue on paved road for 1 mile. At the white entrance pipe gate is OCMA “Bob Swenson Memorial Field”.